Fillet drum and stand



July 31, 1928. 1,679,065

H. J. STEVENSON FILLET DRUM AND STAND Filed A ril 1. 1926 2 s t -s n l lnvenfor. Henry J. STevenso'n July 31, 1928.

Fig.

1,679,065 r H. J. STEVENSON FILLE'I' DRUM AND STAND Filed April 1, 1926 2 Sheets-Sheet 2 Invenfor. Henry J. Stevenson Patented July 31, 1928,

UNITED STATES -PATENT oEFicE.

HENRYFIISTEVENSON, OF. NORTH ANDOVER,..MASSACHUSETTS, ASSIGNOR TO .DAVIS'z; FURBER.MACHINE 00., OF NORTH ANDOVER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

FILLET DRUM .Ann "STAND.

Application filed April 1,1926. SeriaPNo. 98,957.

This invention relates toapparatus for applying fillet material torolls such as are used in carding machines and more especially to friction devices used in connection with fillet drums to produce tension in the fillet material as it is applied tothe roll." The present invention, as will hereinafter more fully appear, is applied to drums known'to the trade as fillet drums, uponwwhich is wound a supply of material in afillet form. Any desired material may be 'used card clothing being illustrated herein.

One end of the'ma'terialis attached to a roll upon which it'is desired to apply the material. This roll is mounted in a stand and suitable means are provided for rotating the roll. As the roll is rotated, the material is wound spirally" thereon, which operation,

causes thematerial to unwind from the fillet drum. A friction device associated with the drum maintains tension in the material.

The above-mentioned friction device consists of a friction drum rigid with the fillet drum about which isa friction band so arranged as to retard rotation of the fillet drum. Means'are also provided to vary the retarding action of the friction"device-"and means to indicate the degree of the said re t-arding action.

' It; is common practice" to employ 'a 5 friction device'on'fillet drums, which device is usually adjustable in order to vary the amount of tension upon-the'material. It can be readily'understoddfrorhthe foregoing thatin order to obtaina desired tension upon the material through the'use'of friction on the fillet drum, it"would require an experienced operator to I approximate the desired tension by estimating the proper de gree-of friction upon thedrum. One of the principal objects of my invention is to provide a means of accurately determining the amount of friction on the fillet drumand thus the tension in the material.

In friction devices of the type herein described there is always present the element 'of wear and consequent deer-casein theeffective friction. Another-object of this'in vention is to provide meansto readjustand maintain constant the degree of friction as wear occurs. I I

In applying card clothing or other material to rolls, itis, of course,desirable'to apply it evenly throughout the length ofthe roll and also to produce a quantity of rolls that are uniform in character. Another obect of the present invention is to provide means for producmg a uniform product by maintaining constant a predetermined tensionon the material throughout the process of=applying it.

A further obj ect of my invention is to pro- -vrde means of quickly applying and releasmg the friction upon the fillet drum.

Qther objects and features ofthe present invention will more fully appear from'the :followmg description and accompanying drawlngsand will be particularly pointed out in the claims.

In the drawings:

Fig. 1 is aside elevation of the apparatus for applying fillet material-to rolls. i

' Fig. 2 is a sideview of the fillet roll and stand with parts broken away showing the friction device and indicating means.

\ Fig. 3 is a cross section on line 3 3' of Fig. '2. l

Fig. 4 is a" detail view showing aportion of the'friction band and-the connection between the band and the indicating' means.

' Referringto the drawings, lindicates a fillet drum upon .whi'ch -is wound spirally in a single layer-a quantity of fillet materlal 2. This drum is 'mounted for-rotationana stand A r0114 uponwhich the fillet material is to beapplied is rotatably mounted in a-stand 5. Any meansmav be "employed to rotate the roll but I have illustrated herein a'hand-operatedwindlass consisting of a large gear 6 securableto the shaft of the roll 4. "A pinion-gear? "is -mounted for rotation upon the stand 5, said gear meshing with the gear 6. A crank-8 is rigid with the=pinion gear 7-by means of ""WlIIClI the large gear 6 is rotated; thus driv- -1ng" the roll v Rigid-with the fillet drum '1 is-a frictio drum 9. Surrounding the friction drum is a' friction band 10 upon the free ends of which isunounted a toggle device adapted to vary the 'p'ressureof the friction band-10 upon the friction drum 9. Said deviceis also capable of quickly releasing and again "applying the said pressure. Thetoggle de- "vice is composed of 'a tension member ll secured to one end of the 'friction band 10 at 12. A pressure transmitting member 13 is slidably mounted upon thetension member ll, said tension member having a manually operated nut 14 upon the screw threaded 14 engages the pressure transmitting memher 13 at 17. Upon the other end of the friction band is secured a fulcrum member 18. This member is provided with a pivot point 19. A similar pivot point 20 is formed upon the pressure transmitting member 13.

Interposed between the pivot points 19 and 20 is a compression member 21. Said member receives pressure from the member 13, which pressure is applied by the nut 14: and delivers it to the end of the friction band, the other end of which is held by the tension member 11. Thus by adjusting the nut 1 1 the pressure of the friction band upon the friction drum may be varied.

It will be also noted that the intermediate pivot point 19 is out of line with the pivot point 20 and the point of connection 12 between the friction band 10 and the tension member 11, so that as pressure is applied to the band a component of the force due to the said pressure will cause the tension member 11 to bear against the fulcrum member 18. The parts as above described are in position such as shown in the full lines, Fig. 2, in which position they are locked together by the toggle action above described. However, when the parts are thrown into the position shown in dotted lines, Fig. 2, the toggle is broken and the pressure upon the friction drum is thereby released.

An arm 23 is secured to the friction band in any suitable way. This arm cooperates with the compression member 2 1 and the 1ndicating means shown generally at 25 to hold the friction band 10 against rotation while the fillet drum is revolved. The compression member 24 has a flexible connection with the arm 23 as shown at 26. This compression member has likewise a flexible connection with one end of a lever 27. The

lever 27 constitutes one member of a gravity actuated balance. Said lever is fulcrumed at 28 upon a bracket 29 mounted upon the stand 3. The lever 27 is of the first class, the short arm of which is shown at 30 and the long arm at 31. also fulcrumed upon the bracket 29 at 33, the said lever 32 having arms 3% and 35. The lever 32 is so positioned with relation to the lever 27 that the end of the arm 31 of the latter engages the end of the arm 34 of the former at 36. The sliding weight 37 is mounted upon the arm 35 of the lever 32.

As the fillet drum 1 is rotated, a force is produced by the friction between the band 10 and the drum 9. Said force is transmitted to the balance 25 through the arm 23 and compression member 2 1. The fulcrum points 28 and 33, also the point of engagement 36 between the lever arm 31 and the lever arm 34:, are of special design. A piece of relatively thin spring steel is inserted in adjacent members forming the said A similar lever 32 is fulcrum points of said point of engagement 36 so that any pivotal movement of the parts will flex the steel pieces thus forming antifriction bearings. -The foregoing design also prevents the parts from getting out of a dj ustm ent.

The operation of the apparatus is as fol lows. A quantity of the fillet material is wound upon the fillet drum, one end of which is attached to the roll upon which the material is to be applied, said roll haV- ing previously been mounted in the stand 5. The material is then spirally wound upon the roll by means of the Windlass, which operation causes the material to unwind from the fillet drum. When the roll has been completely covered with the material, it is secured in position by any suitable means. In order to maintain a predetermined tension upon the material as it is applied, the sliding weight 37 is set at the proper position on the arm 35 of the balance. The pressure of the friction band 10 upon the friction drum 9 lStllGl'l so adjusted by the nut 14 that the above described force delivered to the balance 25 will just counterbalance the weight It is apparent from the foregoing that any desired degree of friction and consequent tension in the material may be maintained by adjustment of the nut 14.

If it is desired to release the tension e11- tirely,'the tension member 11 is pulled manually into the position shown in dotted lines, Fig. 2, which breaks the toggle and thereby leaving the fillet drum free to rotate. To again restore the tension in the material, it is simply necessary to vthrow the parts back into position shown in full lines Fig. 2.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

1. An apparatusfor applying fillet material under tension to a roll comprising a support'for the roll, means mounted upon the support adapted to rotate the roll, a fillet drum upon which is wound fillet material and from which it is unwound by the retation of the roll, a friction drum rigid with the fillet drum, a friction band surrounding the friction drum, means for vary ing the frictional pressure between the friction band and the friction drum, indicating means and a compression member adapted to transmit the force tending to rotate the friction band to the said indicating means and thereby cause it to indicate the tension in the fillet material as it is wound on the roll.

2. In an apparatus for applying material in fillet form to a roll, the combination of a fillet drum upon which fillet material is wound and means to wind the fillet material upon the roll from the fillet drum of a friction drum rigid with the fillet drum, a friction vband surrounding the friction drum, toggle means for adjusting the. pressure of unwinding the fillet material from the fillet drum, the force produced by the frictional engagement between the friction drum and the friction band will be indicated upon the gravity actuated balance.

3. In an apparatus for applying material in fillet form to a roll, the combination of a fillet drum upon which fillet material is wound and means to wind the fillet material upon the roll from the friction drum, a non continuous friction band surrounding the friction drum, toggle means for adjusting the pressure between the frictionband and the friction drum comprising an adjustable tension member connected to one end of the friction band, a compression member adjust-- to one side of a straight line between said adjustable connection and the connection between the friction band and the tension member, the mechanism will act to resist the pressure applied between the friction band and the friction drum and also, when the said intermediate pivot point is on the opposite side of the said straight line, said pressure will be released, and means to indicate the said pressure between the friction band and the friction drum.

t. In an apparatus for applying material in fillet form to a roll, the combination of "a fillet drum upon which fillet material is sure transmitting member slidably mounted upon said tension member, a pressure member having adjustable engagement with the said tension member and adapted to engage the said pressure transmitting member, a compression member interposed between the said pressure transmitting member and the fulcrum member and means to indicate the degree of pressure between the friction band and the friction drum.

In testimony whereof, I have signed my name to this specification.

HENRY J. STEVENSON. 

